antineutrino
noun
an·ti·neu·tri·no
ˌan-tē-nü-ˈtrē-(ˌ)nō 
-nyü-,
ˌan-tī-
: the antiparticle of the neutrino
Examples of antineutrino in a Sentence
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The operational detector will precisely image interactions using detailed 3D tracking, enabling measurement of neutrino oscillations, as well as differences between neutrinos and antineutrinos.
—
Chris Young, Interesting Engineering, 4 Feb. 2026
The mass hierarchy affects how neutrinos and antineutrinos oscillate differently — a key part of the search for CP violation.
—Sharmila Kuthunur, Space.com, 4 Dec. 2025
The fission reactions would emit antineutrinos; the fusion reactions would emit regular neutrinos.
—Big Think, 28 Oct. 2025
Neutrinos pair with antineutrinos, which scientists think mirror their behavior.
—Eric Baculinao, NBC News, 31 Oct. 2024
Sitting still, a muon decays into an electron, a neutrino, and an antineutrino in 2.2 microseconds.
—Byadrian Cho, science.org, 28 Mar. 2024
Also present in this pool of particles were neutrinos, which are very tiny, weakly interacting particles, and antineutrinos, their antimatter counterparts.
—Anne-Katherine Burns, The Conversation, 26 July 2023
But the specific oscillation here, electron antineutrino to sterile neutrino, should take place quickly.
—John Timmer, Ars Technica, 11 Jan. 2023
Beta decays occur within atomic nuclei, when down quarks transform into up quarks, or vice versa, allowing a neutron to become a proton, or the reverse, by emitting an electron and an antineutrino, or a positron (the antimatter counterpart of the electron) and a neutrino.
—Andreas Crivellin, Scientific American, 23 Oct. 2022
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Chris Young, Interesting Engineering, 4 Feb. 2026
The mass hierarchy affects how neutrinos and antineutrinos oscillate differently — a key part of the search for CP violation.
—Sharmila Kuthunur, Space.com, 4 Dec. 2025
The fission reactions would emit antineutrinos; the fusion reactions would emit regular neutrinos.
—Big Think, 28 Oct. 2025
Neutrinos pair with antineutrinos, which scientists think mirror their behavior.
—Eric Baculinao, NBC News, 31 Oct. 2024
Sitting still, a muon decays into an electron, a neutrino, and an antineutrino in 2.2 microseconds.
—Byadrian Cho, science.org, 28 Mar. 2024
Also present in this pool of particles were neutrinos, which are very tiny, weakly interacting particles, and antineutrinos, their antimatter counterparts.
—Anne-Katherine Burns, The Conversation, 26 July 2023
But the specific oscillation here, electron antineutrino to sterile neutrino, should take place quickly.
—John Timmer, Ars Technica, 11 Jan. 2023
Beta decays occur within atomic nuclei, when down quarks transform into up quarks, or vice versa, allowing a neutron to become a proton, or the reverse, by emitting an electron and an antineutrino, or a positron (the antimatter counterpart of the electron) and a neutrino.
—Andreas Crivellin, Scientific American, 23 Oct. 2022
Cite this Entry
“Antineutrino.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antineutrino. Accessed 12 Mar. 2026.
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